Automatic grip-cord adjuster.



AUTOMATIG GRIP CORD ADJUSTER.

APPLICATION rum) 2113.9. 1907.

SECTION flB star/01v 6 w/r/v sss.- I INVE/VTOR OTTO pfUf/PSE/V W e M:

ATTORNEY OTTO PEDERSEN, BFEIEfiEJE-IEIGI-ITS, ILLINOIS.

AUTOMATIC GRIP-CORD ADJUSTER.

Specification of Letters Patent.

Patented June 11,1907.

Application fil d February 9, 1907. Serial No. 356,623.

To all whom it may concern:

Be it known that I, OTTO PEDERSEN, a citizen of the United States, residing at Ohi cago Heights, in the county of Cook and State of Illinois, have invented a new and useful Automatic Grip-Cord Adjuster, of which the following is a specification.

My invention relates to a cord adjuster for lengthening or shortening the cord by which an electric lamp or lamps are suspended from above.

The object of this device is to furnish an easy and safe way to raise and lower an elec tric lamp or lamps, suspended as described above. I

I attain this object by means of the mechanism illustrated in the accompanying drawing, in which:

Figure 1 is a view of the device attached to a piece of a lamp cord, the upper end of which goes to the point of suspension and the lower end to the lamp. 'Fig. 2 is a sectional view on the line A. B. of upper knob showing corners rounded off so as not to cause injury to the insulation of the cord. Fig. 3 is a sectional view on the line C. D. showing clearance between metal washer WV and slots in which the wires are laid.

The cord adjuster consists of four parts as follows: Two knobs, a rod and a washer.

The upper knob U K which may be made of wood or any other suitable insulating material, has a slot on each side for the reception of the cord. The slots are rounded on edges to prevent unnecessary wear on cord. On one side is an angular cut for the accommodation of the washer that holds the rod, and a hole through which the rod R passes freely. The lower knob L K is made of the same material and substantially the same way as upper knob, and is fastened to the lower end of the rod. The rod R, which'may be made of wood, as per drawing, or of corrugated metal, and of any length, is fastened by one end to the lower knob and silps through hole in upper knob and through the washer which is resting on the angular surface of upper knob. The metal washer slips over the rod and is resting on one edge on angular surface of the cut in upper knob.

The hole in the washer is made larger in diameter than the diameter of the rod, and for that reason the washer may be raised and lowered slightly with a twisting or hingelike motion after rod is in place. The upper and lower knobs are inserted between the two strands of the cord, one strand in each slot at such distance from each other as to leave upper end of rod slightly above upper knob. The rod may then be pushed up and the washer will automatically grip the rod and hold it in place as soon as upward movement ceases, leaving the part of the cord between the two knobs looped up to lowerraise washer allowing rod to drop down.

I claim:

In an adjustable lamp support, a knob having two grooves in which rest the two strands of a twisted electric light conductor,

a rod fastened to said knob; a second knob similarly engaging the electric light conductor and having a hole through which the rod passes, and also having a recess in one side in which rests the edge of a washer which passes freely over said rod, substantially as described.

OTTO PEDERSEV.

l/Vitnesses:

GEORGE S. PETERSON, Orro SKARRE. 

